Nucleon form factors and parton distributions in nonlocal chiral effective theory

IF 14.5 2区物理与天体物理 Q1 PHYSICS, NUCLEAR

Progress in Particle and Nuclear Physics Pub Date : 2023-03-01 DOI:10.1016/j.ppnp.2022.104017

P. Wang , Fangcheng He , Chueng-Ryong Ji , W. Melnitchouk

引用次数: 1

Abstract

We present a review of recent applications of nonlocal chiral effective theory to hadron structure studies. Starting from a nonlocal meson–baryon effective chiral Lagrangian, we show how the introduction of a correlation function representing the finite extent of hadrons regularizes the meson loop integrals and introduces momentum dependence in vertex form factors in a gauge invariant manner. We apply the framework to the calculation of nucleon electromagnetic form factors, unpolarized and polarized parton distributions, as well as transverse momentum dependent distributions and generalized parton distributions.

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非局部手性有效理论中的核子形状因子和部分子分布

本文综述了近年来非局部手性有效理论在强子结构研究中的应用。从非局部介子-重子有效手性拉格朗日开始，我们展示了如何引入一个表示强子有限范围的相关函数使介子环积分正则化，并以规范不变的方式引入顶点形式因子中的动量依赖。我们将该框架应用于计算核子电磁形状因子、非极化和极化部分子分布，以及横向动量依赖分布和广义部分子分布。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Progress in Particle and Nuclear Physics 物理-物理：核物理

CiteScore

24.50

自引率

3.10%

发文量

审稿时长

72 days

期刊介绍： Taking the format of four issues per year, the journal Progress in Particle and Nuclear Physics aims to discuss new developments in the field at a level suitable for the general nuclear and particle physicist and, in greater technical depth, to explore the most important advances in these areas. Most of the articles will be in one of the fields of nuclear physics, hadron physics, heavy ion physics, particle physics, as well as astrophysics and cosmology. A particular effort is made to treat topics of an interface type for which both particle and nuclear physics are important. Related topics such as detector physics, accelerator physics or the application of nuclear physics in the medical and archaeological fields will also be treated from time to time.